Growth and superconducting transition of $Pr_{1-x} Ca_x Ba_2 Cu_3 O_{7-δ}$ ($x\approx0.5$) epitaxial thin films
| dc.creator | Xiang, J. Y. | |
| dc.creator | Liu, Z. Y. | |
| dc.creator | Li, J. | |
| dc.creator | Wang, P. | |
| dc.creator | Wang, R. L. | |
| dc.creator | Yang, H. P. | |
| dc.creator | Zhang, Y. Z. | |
| dc.creator | Zheng, D. N. | |
| dc.creator | Wen, H. H. | |
| dc.creator | Zhao, Z. X. | |
| dc.date | 2004-09-10 | |
| dc.date.accessioned | 2026-07-25T15:40:56Z | |
| dc.description | Pr$_{1-x}$Ca$_x$Ba$_2$Cu$_3$O$_{7-δ}$($x\approx$0.5) thin films have been grown on SrTiO$_3$ and YSZ substrates by the pulsed laser ablation. The substrate temperature dependence of orientation and superconducting poperties were systematically studied. Good quality \textit{c} and {a}-axis orientated films can be obtained on SrTiO$_3$ via changing the substrate temperature solely. On YSZ, films with good \textit{c}-axis orientation can be grown, while it is hard to grow films with good \emph{a}-axis orientation by changing substrate temperature alone. The highest $T_{C0}$ is about 37K, which is found in the films grown on YSZ with a good \emph{c}-axis orientation. For the films grown on STO, however, the highest $T_{C0}$ is about 35.6K with a mixed orientation of \emph{c}-axis and \emph{a}-axis. In most of the superconducting films, the weak temperature dependence of the normal state resistivity, as characterized by small $R(290K)/R(50K)\leq2$ ratios, together with a weak localization behavior just above $T_C$ could be attributed to the essential scattering due to the localized electronic states. The superconducting transitions in a field up to 10 T along \textit{c}-axis have been measured on a \textit{c}-axis oriented film grown on SrTiO$_3$. The zero-temperature in-plane upper critical field $B^{ab}_{C2}$(0) is estimated from the resistivity transition data. | |
| dc.description | 12 pages, 5 figures. To be appear in Supercond. Sci. Technol. 17 (2004) | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0409250 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0409250 | |
| dc.identifier | Supercond. Sci. Technol. 18, 41-46 (2005) | |
| dc.identifier | doi:10.1088/0953-2048/18/1/007 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/36029 | |
| dc.subject | Superconductivity | |
| dc.title | Growth and superconducting transition of $Pr_{1-x} Ca_x Ba_2 Cu_3 O_{7-δ}$ ($x\approx0.5$) epitaxial thin films | |
| dc.type | text |